Question

maths question algebraic expression and identities​ only 7th Question..

Answer 1

Step-by-step explanation:

if y-z is x

then x +y is z

so, if we add both of the value we'll have our answer

5a²-7ab-3b²+3a

3a²-5ab-2b². -3

= 8a²-12ab-5b²+3a-3

Answer 2

Answer:

Nothing needs to be subtracted just things that need to be added

Step-by-step explanation: